Follow the instructions listed below to insert a "Line" object into the label.
1)You may click from the toolbar or click "Object" > "Line" from the top menu to insert a "Line" object into the label.
2)Inside the "Line" object area, right-click the mouse and click the "Properties" menu.
3)Inside the "General Settings" tab, you may change the values of the parameters, including dimension size and line direction.
4)For the "Border Style" tab, please refer to this section.